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Recent content by Cyprek

  1. Cyprek

    Jacobian matrix DDSDDE- UMAT

    Hello, Unfortunatelly, in order to check your derivations I would have to make some derivations myself. I don't want to do that, because I'm a little bit pressed for time. However, I uploaded some derivations which I did in the past for the case discussed in the UMAT tutorial included in...
  2. Cyprek

    Jacobian matrix DDSDDE- UMAT

    Hello, The way I see it there is something wrong with your equation. On the right hand, the double dot product of second order unit tensor and the stress tensor would result in a scalar value (namely the trace of the stress tensor). So I think that the second term on the right side of the...
  3. Cyprek

    Writing a UMAT subroutine for thermo-metallurgical model

    Greetings, I intend to write a UMAT subroutine in order to perform a heat treatment simulation using CalculiX (the residual sytresses generated during quenching are my major subject of interest). I will most probably use the CalculiX native UMAT subroiutine rather than writing an Abaqus UMAT...
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